Fix failing `test/e2e/storage/csi_mock_volume.go` test
Fix failing `test/e2e/storage/csi_mock_volume.go` test

Followup on https://github.com/kubernetes/kubernetes/pull/111846. This
particular test was left out from that PR because once it was enabled it
started failing. It was desired to merge
https://github.com/kubernetes/kubernetes/pull/111846 irrespective of
this particular test.

The failure in the test was caused due to the
`createFSGroupRequestPreHook` mock CSI driver hook function assuming
that the request object passed to it is an instance of the respective
struct, but it's actually a pointer instead. This resulted in the hook
function not fulfilling its purpose, and the so the test failed.

iameli/kubernetes,carlory/kubernetes,soltysh/kubernetes,warmchang/kubernetes,jackfrancis/kubernetes,MikeSpreitzer/kubernetes,cblecker/kubernetes,kubernetes/kubernetes,kubernetes/kubernetes,carlory/kubernetes,csrwng/kubernetes,csrwng/kubernetes,bparees/kubernetes,GulajavaMinistudio/kubernetes,mosoft521/kubernetes,mengqiy/kubernetes,mkumatag/kubernetes,mkumatag/kubernetes,jackfrancis/kubernetes,kubernetes/kubernetes,liggitt/kubernetes,openshift/kubernetes,PiotrProkop/kubernetes,PiotrProkop/kubernetes,matthyx/kubernetes,openshift/kubernetes,enj/kubernetes,jessfraz/kubernetes,jsafrane/kubernetes,bparees/kubernetes,jsafrane/kubernetes,chestack/kubernetes,zhangmingld/kubernetes,jackfrancis/kubernetes,soltysh/kubernetes,carlory/kubernetes,thockin/kubernetes,k82cn/kubernetes,PiotrProkop/kubernetes,feiskyer/kubernetes,lojies/kubernetes,gnufied/kubernetes,warmchang/kubernetes,GulajavaMinistudio/kubernetes,matthyx/kubernetes,warmchang/kubernetes,lojies/kubernetes,shyamjvs/kubernetes,openshift/kubernetes,dixudx/kubernetes,MikeSpreitzer/kubernetes,chestack/kubernetes,gnufied/kubernetes,matthyx/kubernetes,k82cn/kubernetes,feiskyer/kubernetes,BenTheElder/kubernetes,dims/kubernetes,mahak/kubernetes,lojies/kubernetes,iameli/kubernetes,thockin/kubernetes,cblecker/kubernetes,dims/kubernetes,kevin-wangzefeng/kubernetes,jessfraz/kubernetes,bparees/kubernetes,chestack/kubernetes,ravilr/kubernetes,ping035627/kubernetes,jessfraz/kubernetes,deads2k/kubernetes,warmchang/kubernetes,ping035627/kubernetes,gnufied/kubernetes,ravilr/kubernetes,feiskyer/kubernetes,kevin-wangzefeng/kubernetes,k82cn/kubernetes,enj/kubernetes,dixudx/kubernetes,deads2k/kubernetes,MikeSpreitzer/kubernetes,zhangmingld/kubernetes,mahak/kubernetes,mahak/kubernetes,carlory/kubernetes,tengqm/kubernetes,cblecker/kubernetes,shyamjvs/kubernetes,ravilr/kubernetes,PiotrProkop/kubernetes,mahak/kubernetes,soltysh/kubernetes,mkumatag/kubernetes,ping035627/kubernetes,cblecker/kubernetes,BenTheElder/kubernetes,mkumatag/kubernetes,GulajavaMinistudio/kubernetes,shyamjvs/kubernetes,gnufied/kubernetes,olivierlemasle/kubernetes,dixudx/kubernetes,mosoft521/kubernetes,deads2k/kubernetes,BenTheElder/kubernetes,GulajavaMinistudio/kubernetes,mengqiy/kubernetes,openshift/kubernetes,jessfraz/kubernetes,PiotrProkop/kubernetes,jsafrane/kubernetes,tengqm/kubernetes,mahak/kubernetes,olivierlemasle/kubernetes,liggitt/kubernetes,kevin-wangzefeng/kubernetes,mengqiy/kubernetes,liggitt/kubernetes,deads2k/kubernetes,MikeSpreitzer/kubernetes,iameli/kubernetes,zhangmingld/kubernetes,zhangmingld/kubernetes,ravilr/kubernetes,lojies/kubernetes,dixudx/kubernetes,csrwng/kubernetes,jsafrane/kubernetes,openshift/kubernetes,matthyx/kubernetes,ping035627/kubernetes,iameli/kubernetes,dims/kubernetes,kevin-wangzefeng/kubernetes,dims/kubernetes,csrwng/kubernetes,deads2k/kubernetes,olivierlemasle/kubernetes,soltysh/kubernetes,olivierlemasle/kubernetes,tengqm/kubernetes,BenTheElder/kubernetes,mengqiy/kubernetes,enj/kubernetes,ping035627/kubernetes,MikeSpreitzer/kubernetes,shyamjvs/kubernetes,enj/kubernetes,thockin/kubernetes,mengqiy/kubernetes,ravilr/kubernetes,mosoft521/kubernetes,dixudx/kubernetes,olivierlemasle/kubernetes,lojies/kubernetes,iameli/kubernetes,mosoft521/kubernetes,kevin-wangzefeng/kubernetes,liggitt/kubernetes,bparees/kubernetes,jessfraz/kubernetes,gnufied/kubernetes,thockin/kubernetes,chestack/kubernetes,chestack/kubernetes,mosoft521/kubernetes,shyamjvs/kubernetes,mkumatag/kubernetes,zhangmingld/kubernetes,cblecker/kubernetes,tengqm/kubernetes,enj/kubernetes,kubernetes/kubernetes,feiskyer/kubernetes,jackfrancis/kubernetes,tengqm/kubernetes,jackfrancis/kubernetes,bparees/kubernetes,k82cn/kubernetes,thockin/kubernetes,BenTheElder/kubernetes,GulajavaMinistudio/kubernetes,dims/kubernetes,kubernetes/kubernetes,warmchang/kubernetes,carlory/kubernetes,csrwng/kubernetes,k82cn/kubernetes,feiskyer/kubernetes,soltysh/kubernetes,matthyx/kubernetes,jsafrane/kubernetes,liggitt/kubernetes,zhangmingld/kubernetes